threaded.c revision 7cdc0497 
1/*
2 * Copyright © 2015 Canonical Ltd. (Maarten Lankhorst)
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22
23#include <sys/ioctl.h>
24#include <dlfcn.h>
25#include <fcntl.h>
26#include <stdio.h>
27#include <unistd.h>
28#include <errno.h>
29#include <pthread.h>
30
31#include "xf86drm.h"
32#include "nouveau.h"
33
34static typeof(ioctl) *old_ioctl;
35static int failed;
36
37static int import_fd;
38
39int ioctl(int fd, unsigned long request, ...)
40{
41	va_list va;
42	int ret;
43	void *arg;
44
45	va_start(va, request);
46	arg = va_arg(va, void *);
47	ret = old_ioctl(fd, request, arg);
48	va_end(va);
49
50	if (ret < 0 && request == DRM_IOCTL_GEM_CLOSE && errno == EINVAL)
51		failed = 1;
52
53	return ret;
54}
55
56static void *
57openclose(void *dev)
58{
59	struct nouveau_device *nvdev = dev;
60	struct nouveau_bo *bo = NULL;
61	int i;
62
63	for (i = 0; i < 100000; ++i) {
64		if (!nouveau_bo_prime_handle_ref(nvdev, import_fd, &bo))
65			nouveau_bo_ref(NULL, &bo);
66	}
67	return NULL;
68}
69
70int main(int argc, char *argv[])
71{
72	drmVersionPtr version;
73	const char *device = NULL;
74	int err, fd, fd2;
75	struct nouveau_device *nvdev, *nvdev2;
76	struct nouveau_bo *bo;
77	pthread_t t1, t2;
78
79	old_ioctl = dlsym(RTLD_NEXT, "ioctl");
80
81	if (argc < 2) {
82		fd = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
83		if (fd >= 0)
84			fd2 = drmOpenWithType("nouveau", NULL, DRM_NODE_RENDER);
85	} else {
86		device = argv[1];
87
88		fd = open(device, O_RDWR);
89		if (fd >= 0)
90			fd2 = open(device, O_RDWR);
91		else
92			fd2 = fd = -errno;
93	}
94
95	if (fd < 0) {
96		fprintf(stderr, "Opening nouveau render node failed with %i\n", fd);
97		return device ? -fd : 77;
98	}
99
100	if (fd2 < 0) {
101		fprintf(stderr, "Opening second nouveau render node failed with %i\n", -errno);
102		return errno;
103	}
104
105	version = drmGetVersion(fd);
106	if (version) {
107		printf("Version: %d.%d.%d\n", version->version_major,
108		       version->version_minor, version->version_patchlevel);
109		printf("  Name: %s\n", version->name);
110		printf("  Date: %s\n", version->date);
111		printf("  Description: %s\n", version->desc);
112
113		drmFreeVersion(version);
114	}
115
116	err = nouveau_device_wrap(fd, 0, &nvdev);
117	if (!err)
118		err = nouveau_device_wrap(fd2, 0, &nvdev2);
119	if (err < 0)
120		return 1;
121
122	err = nouveau_bo_new(nvdev2, NOUVEAU_BO_GART, 0, 4096, NULL, &bo);
123	if (!err)
124		err = nouveau_bo_set_prime(bo, &import_fd);
125
126	if (!err) {
127		pthread_create(&t1, NULL, openclose, nvdev);
128		pthread_create(&t2, NULL, openclose, nvdev);
129	}
130
131	pthread_join(t1, NULL);
132	pthread_join(t2, NULL);
133
134	close(import_fd);
135	nouveau_bo_ref(NULL, &bo);
136
137	nouveau_device_del(&nvdev2);
138	nouveau_device_del(&nvdev);
139	if (device) {
140		close(fd2);
141		close(fd);
142	} else {
143		drmClose(fd2);
144		drmClose(fd);
145	}
146
147	if (failed)
148		fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed with EINVAL,\n"
149				"race in opening/closing bo is likely.\n");
150
151	return failed;
152}
153